Introduction Contraceptive provision at the time of abortion lowers rates of subsequent unplanned pregnancy but cost,method availability and other considerations impact decision-making.We examined factors associated w...Introduction Contraceptive provision at the time of abortion lowers rates of subsequent unplanned pregnancy but cost,method availability and other considerations impact decision-making.We examined factors associated with contraceptive preferences at the time of abortion in a US safety net hospital.Methods This is a retrospective cohort study.We abstracted medical records for patients seen in the gynaecology clinic between April 2019 and June 2021 who received a medication or procedural abortion for an undesired pregnancy.We collected demographic and clinical data from the electronic medical record.We generated descriptive statistics using Stata V.18 and used R to perform a latent class analysis to identify patterns of association with selected demographic variables and chosen contraceptive methods.Results 638 met inclusion criteria.Latent group 1,which was largely Hispanic,on Medicaid,and/or undergoing medication abortion,most often chose the subdermal implant or pills.Latent group 2,which was largely non-Hispanic and undergoing procedural abortion,most often chose a levonorgestrel intrauterine device(LNG IUD)or declined birth control.Nearly 80%initiated any contraceptive method,with over 20%choosing an LNG IUD and over 40%choosing any IUD or the subdermal implant.Contraceptive uptake was highest among Spanish-speaking individuals(115/131,87.8%).Non-initiation occurred most frequently among individuals who did not have insurance/self-paid(24/72,33.3%),spoke a language other than English or Spanish(8/27,29.6%),or had a procedural abortion<14 weeks(38/171,22.2%).Conclusions Contraceptive uptake was high among abortion-seeking individuals.Further research can clarify how other factors impact decision-making and uptake among vulnerable populations.展开更多
Ladybirds(Coccinella septempunctata)are adept at living in humid conditions as their elytra can effectively shield their bodies from raindrops.However,due to technical difficulties in examining the delicate structure,...Ladybirds(Coccinella septempunctata)are adept at living in humid conditions as their elytra can effectively shield their bodies from raindrops.However,due to technical difficulties in examining the delicate structure,the understanding of the water-proofing mechanism of the coupling structure and its impact on the dome-like elytra response to the raindrops remain elusive.In this combined experimental and theoretical study,we showed that the coupling structure on the ladybird elytra can ward off the raindrops traveling at a velocity of 6 m/s,which generates an impact force equivalent to 600 times the body weight.The waterproofing mechanism relies on the deformability of the elytra and their microstructures,which collectively impedes the formation of microchannels for liquids.The enhanced water-proofing capabilities enabled by the coupling structures are validated through experimental testing on comparative 3D-printed models,showing the effectiveness of these structures in improving water resistance.Subsequently,we showcased a water-proofing device,which substantially improved the efficiency of solar panels in converting solar energy.This multidisciplinary study not only advances our understanding of the biomechanics of coupling systems in insects but also inspires the design of water-proofing deployable structures.展开更多
文摘Introduction Contraceptive provision at the time of abortion lowers rates of subsequent unplanned pregnancy but cost,method availability and other considerations impact decision-making.We examined factors associated with contraceptive preferences at the time of abortion in a US safety net hospital.Methods This is a retrospective cohort study.We abstracted medical records for patients seen in the gynaecology clinic between April 2019 and June 2021 who received a medication or procedural abortion for an undesired pregnancy.We collected demographic and clinical data from the electronic medical record.We generated descriptive statistics using Stata V.18 and used R to perform a latent class analysis to identify patterns of association with selected demographic variables and chosen contraceptive methods.Results 638 met inclusion criteria.Latent group 1,which was largely Hispanic,on Medicaid,and/or undergoing medication abortion,most often chose the subdermal implant or pills.Latent group 2,which was largely non-Hispanic and undergoing procedural abortion,most often chose a levonorgestrel intrauterine device(LNG IUD)or declined birth control.Nearly 80%initiated any contraceptive method,with over 20%choosing an LNG IUD and over 40%choosing any IUD or the subdermal implant.Contraceptive uptake was highest among Spanish-speaking individuals(115/131,87.8%).Non-initiation occurred most frequently among individuals who did not have insurance/self-paid(24/72,33.3%),spoke a language other than English or Spanish(8/27,29.6%),or had a procedural abortion<14 weeks(38/171,22.2%).Conclusions Contraceptive uptake was high among abortion-seeking individuals.Further research can clarify how other factors impact decision-making and uptake among vulnerable populations.
基金Shenzhen Science and Technology Program,Grant/Award Numbers:GXWD2021B03,20220817165030002National Natural Science Foundation of China,Grant/Award Numbers:T2422031,52275298Postdoctoral Fellowship Program of CPSF,Grant/Award Number:GZC20240192。
文摘Ladybirds(Coccinella septempunctata)are adept at living in humid conditions as their elytra can effectively shield their bodies from raindrops.However,due to technical difficulties in examining the delicate structure,the understanding of the water-proofing mechanism of the coupling structure and its impact on the dome-like elytra response to the raindrops remain elusive.In this combined experimental and theoretical study,we showed that the coupling structure on the ladybird elytra can ward off the raindrops traveling at a velocity of 6 m/s,which generates an impact force equivalent to 600 times the body weight.The waterproofing mechanism relies on the deformability of the elytra and their microstructures,which collectively impedes the formation of microchannels for liquids.The enhanced water-proofing capabilities enabled by the coupling structures are validated through experimental testing on comparative 3D-printed models,showing the effectiveness of these structures in improving water resistance.Subsequently,we showcased a water-proofing device,which substantially improved the efficiency of solar panels in converting solar energy.This multidisciplinary study not only advances our understanding of the biomechanics of coupling systems in insects but also inspires the design of water-proofing deployable structures.
